I see that it would be a lot of work, but so will switching to IPv6 be. The question is: which will be worse? which will actually happen? I don't know.
I'm probably forgetting a lot of things but to me it would seem doable to switch to private LAN addresses using DHCP and NAT, as long as there are no hardcoded IPs lingering around (but only hostnames which can be updated in a central location).
Very valid point - especialy given that many text-books and other Ip education material would tend to bias you to use 10.0.0.0/8 as that is what you do, remember many companies who used the old SCO IP range as there `network chap` learned IP from a popular book that used SCO IP's in there examples.
Thing is though, if a pretty compitent company like IBM who know how to do IT have not moved to IPV6 and use public IP ranges for there internal networks albiet router blocked. Well, it just don't bode well for other less technicaly compitent people to move now does it and the cycle of procrastination with IPV4 carry's on :(.
I'm probably forgetting a lot of things but to me it would seem doable to switch to private LAN addresses using DHCP and NAT, as long as there are no hardcoded IPs lingering around (but only hostnames which can be updated in a central location).